function resetPos() {
    	var browserWidth = document.body.clientWidth;
    	var imageWidth = document.images[2].offsetWidth;
    	var image1 = document.getElementById("firecracker1");
    	image1.style.left = (browserWidth-imageWidth)/2;
    	var image2 = document.getElementById("firecracker2");
    	image2.style.right = (browserWidth-imageWidth)/2;
}